A full-height platform safety door

Abstract

The present invention relates to the technical field of transportation facilities, and specifically discloses a full-height platform safety door, which includes two fixed doors, two sliding doors, and a top box; a synchronous belt and a guide rod are installed in the top box; two sliding sleeves are fixed to each sliding door, a driving sleeve is provided between the two sliding sleeves, a buffer spring is provided between the driving sleeve and the sliding sleeve, and the driving sleeve is connected to the synchronous belt via a traction arm; two telescopic containers are provided in the top box; the proximal ends of the two telescopic containers are fixedly connected to the two traction arms, and the distal ends are fixedly connected to the top box; vertical airbags are fixed to the rear sides of the sliding doors, and transverse airbags are fixed to the rear side of the top box. When the full-height platform safety door is in the open state, the transverse airbags and the vertical airbags can isolate the safety gap, reduce energy loss caused by air flow, and prevent people or objects from being trapped in the safety gap, significantly improving safety. The structure is simple, the transmission performance is efficient and stable, the implementation cost is low, and damage to the exterior coating of the train can be avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation facilities, and in particular to a full-height platform safety door. Background Art

[0002] The full-height platform safety door is a safety protection facility for urban rail transit platforms. It is usually composed of fixed doors, sliding doors and a top box. It extends from the platform floor to the ceiling area, achieving complete isolation between the platform and the track area, effectively reducing the risk of passengers falling onto the tracks, and reducing air exchange between the platform and the tunnel, thereby reducing the energy consumption of the air-conditioning system. To ensure the safe operation of the train, a safety gap of 20-30 cm must be reserved between the full-height platform safety door and the train. When the full-height platform safety door is opened, the anti-stepping rubber strip installed on the edge of the platform can separate the safety gap on the lower side of the door. However, the safety gaps on the left and right sides and the upper side of the door connect the station pavilion to the tunnel. The negative pressure effect generated by the tunnel's heat exhaust system will trigger two-way air flow and heat and mass exchange, significantly increasing the air conditioning load of the station hall and causing an increase in cooling energy consumption.

[0003] Patent publication number CN113266239B discloses an energy-saving platform screen door system for rail transit stations. By installing transverse and vertical shielding panels, the system can block safety gaps and prevent energy loss caused by heat and mass exchange. In this technical solution, the state adjustment of the transverse and vertical shielding panels requires independent drive devices, control systems, and complex transmission mechanisms. This results in a complex structure and high construction and operating costs. Furthermore, the size of the safety gap varies each time a train stops, making it difficult to ensure close, non-destructive contact between the transverse and vertical shielding panels and the train, and the barrier effect still needs to be improved. Summary of the Invention

[0004] In order to solve the shortcomings of the existing technology, the present invention provides a full-height platform safety door, which is based on the structure of the existing full-height platform safety door. Through the reasonable arrangement of telescopic containers, horizontal airbags and vertical airbags, it effectively blocks the safety gap, reduces the heat and mass exchange between the tunnel and the station hall, and reduces the air-conditioning load and refrigeration energy consumption of the station hall.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A full-height platform safety door comprises two fixed doors arranged at intervals, two sliding doors located behind the fixed doors, and a top box; a traction mechanism consisting of a drive motor, a synchronous belt, and two pulleys is installed in the top box, the synchronous belt comprising two straight sections, a guide rod extending in the direction of travel of the sliding door is fixed in the top box; two sliding sleeves arranged at intervals and sleeved on the guide rod are fixed on each sliding door; a drive sleeve is provided between the two sliding sleeves on the same sliding door, and a buffer spring is provided between the drive sleeve and the sliding sleeves on both sides of the drive sleeve. Spring; the driving sleeves above the two sliding doors are fixedly connected to the two straight sections via traction arms; two telescopic containers filled with gas are provided in the top box; the ends of the two telescopic containers that are close to each other are fixedly connected to the two traction arms, and the ends of the two telescopic containers that are far away are fixedly connected to the top box; vertical airbags are fixed to the rear sides of the ends close to the two sliding doors, and a transverse airbag is fixed to the rear side of the top box, and the transverse airbags are connected to the two telescopic containers via gas hoses; the two vertical airbags are connected to the two telescopic containers via gas hoses.

[0007] In a preferred embodiment, the synchronous belt is made of rubber or polyurethane, with a steel wire rope embedded therein, and the synchronous belt and the pulley are provided with a matching tooth structure.

[0008] In a preferred embodiment, two drive motors are provided, which are respectively connected to two pulleys for transmission.

[0009] In a preferred embodiment, a support base is fixed above each of the two fixed doors, and both ends of the guide rod are rotatably connected to the two support bases; and the two pulleys are rotatably connected to the two support bases.

[0010] In a preferred embodiment, a ground rail is provided on the lower side of the sliding door to provide support therefor, and limiting steps are provided on the two fixed doors to limit the travel of the sliding door.

[0011] In a preferred embodiment, two guide cylinders are fixed above the two fixed doors, and the opposite ends of the two guide cylinders are open ends. The two telescopic containers are respectively located in the two guide cylinders, and the sides of the guide cylinders are provided with slots for the traction arms to move.

[0012] In a preferred embodiment, the main body of the telescopic container is a bellows made of elastic material, and both ends of the bellows are sealed by sealing plugs.

[0013] In a preferred embodiment, the transverse airbag and the vertical airbag are made of elastic material, are hollow inside, and have surrounding side walls with an annular corrugated structure.

[0014] Compared with the prior art, the full-height platform safety door of the present invention has the following beneficial technical effects:

[0015] 1. When the full-height platform safety door is open, the horizontal and vertical airbags block the safety gaps on the left, right, and top sides of the door, reducing energy loss caused by air flow and preventing people or objects from becoming trapped in the gaps, significantly improving safety. When the full-height platform safety door is closed, the horizontal and vertical airbags remain retracted to prevent collisions with moving trains.

[0016] 2. During the operation of this full-height platform safety door, power is provided by a traction mechanism, and energy is transmitted through a telescopic container. While adjusting the opening and closing status of the sliding door, the working status of the horizontal airbag and the vertical airbag are automatically adjusted. There is no need to set up a separate drive device and control device, nor is there any need to set up complex mechanical transmission structures such as wheels and shafts. The overall structure is simple and the transmission performance is efficient and stable, which significantly reduces implementation costs and operating costs.

[0017] 3. This full-height platform safety door uses transverse airbags and vertical airbags to separate the safety gap. The transverse airbags and vertical airbags are soft and have good deformation ability. They can make close and balanced non-destructive contact with the outside of the train. The sealing effect is stable and can adapt to changes in the size of the safety gap.

[0018] 4. When the full-height platform safety door is opened, after the sliding door stops moving, the horizontal airbags and vertical airbags continue to extend to achieve sealed contact with the train; correspondingly, when the full-height platform safety door is closed, the horizontal airbags and vertical airbags first shrink to separate from the train, and then the two sliding doors slide toward the middle; this operating mode can effectively prevent the horizontal airbags and vertical airbags from rubbing or scratching against the train during the movement of the sliding door, thereby extending the working life and avoiding damage to the train's external coating.

[0019] 5. During the opening and closing process of this full-height platform safety door, the driving sleeve transmits the driving force through the buffer spring, which can effectively reduce the impact of the driving motor on the sliding door when starting and stopping, improve the stability of the sliding door, and significantly reduce the occurrence of pinching accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] Figure 1 Schematic diagram of the structure of the front side of the full-height platform safety door in the embodiment.

[0022] Figure 2 It is a schematic structural diagram of the rear side of the full-height platform safety door in the embodiment.

[0023] Figure 3This is one of the structural diagrams of the interior of the top box in the embodiment.

[0024] Figure 4 This is the second structural diagram of the interior of the top box in the embodiment.

[0025] Figure 5 This is one of the schematic diagrams of the partial structure inside the top box in the embodiment.

[0026] Figure 6 This is the second schematic diagram of the partial structure inside the top box in the embodiment.

[0027] Figure 7 Schematic diagram of the structure of the transverse airbag and the vertical airbag in the embodiment.

[0028] Figure 8 Schematic diagram of the air path connection of the telescopic container, the horizontal airbag and the vertical airbag in the embodiment.

[0029] Figure 9 This is a schematic diagram of the state in which the traction arm continues to move after the two sliding doors are closed.

[0030] Figure 10 This is a schematic diagram of the state in which the traction arm continues to move after the two sliding doors are opened.

[0031] Figure 11 Schematic diagram of the contraction state of the transverse airbag and the vertical airbag in the embodiment.

[0032] Figure 12 Schematic diagram of the horizontal airbag and vertical airbag in the embodiment in the extended state.

[0033] In the figure, 1. fixed door, 2. top box, 3. sliding door, 4. floor rail, 5. transverse airbag, 6. third joint, 7. second joint, 8. vertical airbag, 9. support seat, 10. drive motor, 11. guide rod, 12. synchronous belt, 13. guide cylinder, 14. drive sleeve, 15. sliding sleeve, 16. door closing spring, 17. traction arm, 18. door opening spring, 19. limiting step, 20. telescopic container, 201. bellows, 202. sealing plug, 21. first joint, 22. pulley, 23. slot. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See Figures 1-8 As shown, the embodiment discloses a full-height platform safety door, comprising two fixed doors 1 and two sliding doors 3 erected on the ground, and a top box 2 located above the fixed doors 1 and the sliding doors 3; the two fixed doors 1 are spaced apart and fixedly connected to the top box 2, forming a rectangular doorway between the three; the two sliding doors 3 are located on the rear side of the fixed doors 1, i.e., on the side of the fixed doors 1 close to the track area, and the two sliding doors 3 can move within a linear travel to adjust the doorway's open and closed state;

[0036] A traction mechanism consisting of a drive motor 10, a synchronous belt 12, and two pulleys 22 is installed in the top box 2. The synchronous belt 12 is in a closed loop and supported by the two pulleys 22. It forms two straight sections distributed vertically and moving in opposite directions. The extension direction of the two straight sections is consistent with the travel direction of the sliding door 3. A guide rod 11 is fixed in the top box 2 and extends along the travel direction of the sliding door 3.

[0037] Each sliding door 3 is fixed with two sliding sleeves 15 that are sleeved on the guide rod 11 and spaced apart. A driving sleeve 14 is provided between the two sliding sleeves 15 on the same sliding door 3. The driving sleeve 14 is sleeved on the guide rod 11 and the two slides are slidably engaged. A buffer spring is provided between the driving sleeve 14 and the sliding sleeves 15 on both sides. When the driving sleeve 14 applies driving force to the sliding door 3 via the buffer spring, the buffer spring can drive the sliding door 3 to move in a partially compressed state. For the convenience of a detailed description of the technical solution, the buffer spring near the middle of the guide rod 11 is referred to as the door-closing spring 16, and the buffer spring far from the middle of the guide rod 11 is referred to as the door-opening spring 18. The two driving sleeves 14 above the two sliding doors 3 are respectively fixedly connected to the two straight sections via traction arms 17.

[0038] The top box 2 is provided with two telescopic containers 20 spaced apart along the guide rod 11. The telescopic containers 20 can be telescoped and deformed along the extension direction of the guide rod 11 to change the volume of the inner cavity. The telescopic containers 20 are filled with gas. The proximal ends of the two telescopic containers 20 are respectively fixedly connected to the two traction arms 17, and the distal ends of the two telescopic containers 20 are respectively fixedly connected to the top box 2. The telescopic containers 20 are connected to a first joint 21.

[0039] A vertical airbag 8 extending in the vertical direction is fixed to the rear side of the adjacent end of the two sliding doors 3, and a transverse airbag 5 extending in the horizontal direction is fixed to the rear side of the top box 2, and the transverse airbag 5 is located above the two vertical airbags 8; the transverse airbag 5 and the vertical airbag 8 can both be telescopically deformed in the front-to-rear direction according to the change of the internal air pressure. Specifically, when the internal gas of the transverse airbag 5 and the vertical airbag 8 increases and the pressure rises, they will extend backward, and vice versa, they will contract forward; the transverse airbag 5 is connected to a second connector 7, and the second connector 7 is connected to the first connector 21 of the two telescopic containers 20 via an air hose; the vertical airbag 8 is connected to a third connector 6, and the third connector 6 of the two vertical airbags 8 is connected to the first connector 21 of the two telescopic containers 20 via an air hose.

[0040] The working principle of this full-height platform safety door is:

[0041] See Figure 3 、 Figure 4 、 Figure 9 、 Figure 12 As shown, when the full-height platform safety door is opened, the drive motor 10 outputs power in one direction, usually forward rotation, and the synchronous belt 12 pulls the two drive sleeves 14 to move synchronously in opposite directions via the traction arm 17, so that they move away from each other; initially, as the drive sleeve 14 moves, the door closing spring 16 gradually extends and the door opening spring 18 gradually compresses. During this process, the sliding door 3 does not move synchronously with the drive sleeve 14 until the thrust exerted by the door opening spring 18 on the sliding sleeve 15 is sufficient to drive the sliding door 3 to move, and the two sliding doors 3 gradually move away from each other; during the movement of the traction arm 17, the two telescopic containers 20 are forced to contract, and the gas in the telescopic container 20 enters the lateral air chamber. The airbags 5 and the vertical airbags 8 are compressed and compressed, and the two sliding doors 3 cannot move further after being fully opened, but the door opening springs 18 are in an incompletely compressed state at this time, and the synchronous belt 12 will drive the two traction arms 17 to continue to move in the original direction, so that the telescopic container 20 continues to shrink, and the transverse airbags 5 and the vertical airbags 8 continue to extend backward and finally come into contact with the train; thereby, the safety gaps on the left and right sides and the upper side of the door are cut off, which on the one hand avoids air flow between the tunnel and the station hall and reduces energy loss; on the other hand, the two vertical airbags 8 cut off the safety gaps on both sides of the door to avoid people or objects being stuck in the safety gaps, thereby significantly improving safety.

[0042] See Figure 3 、 Figure 4 、 Figure 10 、 Figure 11As shown, when the full-height platform safety door is closed, the drive motor 10 outputs power in the other direction, usually in reverse, and the synchronous belt 12 pulls the two drive sleeves 14 to move synchronously in opposite directions via the traction arm 17, so that they are close to each other; initially, as the drive sleeve 14 moves, the door opening spring 18 gradually extends and the door closing spring 16 gradually compresses. During this process, the sliding door 3 does not move synchronously with the drive sleeve 14, but the telescopic container 20 is extended by the traction arm 17, so that the gas in the horizontal airbag 5 and the two vertical airbags 8 flows back into the telescopic container 20, and the horizontal airbag 5 and the vertical airbag 8 are compressed. When the closing spring 16 exerts a thrust on the sleeve 15 sufficient to drive the sliding door 3 to move, the two sliding doors 3 will gradually approach each other. After the two sliding doors 3 reach the closed state, they cannot move any closer. However, at this time, the closing spring 16 is in an incompletely compressed state, and the synchronous belt 12 will drive the two traction arms 17 to continue moving in the original direction, causing the closing spring 16 to be further compressed to ensure that the two sliding doors 3 can stably maintain the closed state. At the same time, as the two telescopic containers 20 extend, the transverse airbag 5 and the vertical airbag 8 gradually shrink to their minimum size to avoid scratching the moving train.

[0043] During operation, this full-height platform safety door is powered by a traction mechanism, which transmits energy through a telescopic container 20. This allows the operating states of the transverse airbags 5 and vertical airbags 8 to automatically adjust as the sliding door 3 opens and closes, eliminating the need for separate drive and control devices, or complex mechanical transmission structures such as wheels and shafts. The overall structure is simple, the transmission performance is efficient and stable, and the implementation and operating costs are low. As a pneumatic power device, the telescopic container 20 is easier to achieve sealing than conventional piston-type pneumatic power devices, resulting in low implementation costs and stable operating performance.

[0044] This full-height platform safety door uses transverse airbags 5 and vertical airbags 8 to separate the safety gaps on both sides and the top of the door. The transverse airbags 5 and vertical airbags 8 are soft and have good deformation capabilities. They can make close and balanced non-destructive contact with the outside of the train, improve the sealing effect, and adapt to changes in the size of the safety gap.

[0045] When the full-height platform safety door is opened, the transverse airbags 5 and the vertical airbags 8 will not fully extend during the movement of the two sliding doors 3. When the sliding doors 3 stop moving, the transverse airbags 5 and the vertical airbags 8 continue to extend to achieve sealed contact with the train; correspondingly, when the two sliding doors 3 are closed, the transverse airbags 5 and the vertical airbags 8 will first shrink to separate from the train, and then the two sliding doors 3 will slide toward the middle; this operating mode can effectively prevent the transverse airbags 5 and the vertical airbags 8 from rubbing or scratching against the train during the movement of the sliding doors 3, thereby extending their service life and avoiding damage to the exterior coating of the train.

[0046] During the opening and closing process of this full-height platform safety door, the buffer spring realizes the flexible transmission of power, effectively reducing the impact of the drive motor 10 on the sliding door 3 when starting and stopping, making the force fluctuation of the sliding door 3 more gentle and the operation more stable; what is more important is that when the sliding door 3 clamps the human body during the closing process, the buffer spring can buffer the clamping force of the two sliding doors 3 and provide an opportunity for the trapped person to be pulled out. Combined with the anti-pinch function commonly configured in existing safety door systems, it can significantly reduce the occurrence of pinching accidents.

[0047] Preferably, the synchronous belt 12, as a transmission component, is made of rubber or polyurethane and has an embedded steel wire rope. The synchronous belt 12 and the pulley 22 are provided with a matching tooth structure to achieve non-slip transmission and improve the position adjustment accuracy of the two sliding doors 3.

[0048] Preferably, Figure 3 As shown, there are two drive motors 10, which are respectively connected to the two pulleys 22. When one drive motor 10 fails, the other drive motor 10 ensures the normal opening and closing of the sliding door 3.

[0049] Preferably, Figure 3 、 Figure 4 As shown, a support seat 9 is fixed above each of the two fixed doors 1 , and both ends of the guide rod 11 are rotatably connected to the two support seats 9 ; and two pulleys 22 are rotatably connected to the two support seats 9 .

[0050] Preferably, Figure 1 、 Figure 2 As shown, a ground rail 4 is provided on the lower side of the sliding door 3 to provide support therefor, and a limiting step 19 is provided on the two fixed doors 1 to limit the travel of the sliding door 3.

[0051] Preferably, see Figure 3-Figure 6 、 Figure 9 As shown, two guide cylinders 13 are fixed above the two fixed doors 1, and the opposite ends of the two guide cylinders 13 are open ends. The two telescopic containers 20 are respectively located in the two guide cylinders 13. The sides of the guide cylinders 13 are provided with slots 23 for the traction arms 17 to move. The guide cylinders 13 can constrain the deformation direction of the telescopic containers 20. At the same time, the technical requirements for the manufacturing materials and structural design of the telescopic containers 20 are reduced, making them easier to implement.

[0052] Preferably, see Figure 5 、 Figure 6 As shown, the main body of the telescopic container 20 is a bellows 201 made of elastic material, and both ends of the bellows 201 are sealed by sealing plugs 202; to further improve the structural strength and durability of the bellows 201, the bellows 201 can be a bellows 201 product with embedded steel wire.

[0053] Preferably, see Figure 7 As shown, the transverse airbag 5 and the vertical airbag 8 are made of elastic material, are hollow inside, and have annular corrugated pleated structures on the surrounding side walls.

Claims

1. A full-height platform safety door comprising two spaced-apart fixed doors, two sliding doors located behind the fixed doors, and a top box; a traction mechanism consisting of a drive motor, a timing belt, and two pulleys is mounted within the top box; the timing belt comprises two straight sections; and a guide rod extending in the direction of travel of the sliding doors is fixed within the top box; the characteristics are: Two sliding sleeves are fixed on each sliding door and are sleeved on the guide rod and distributed at intervals; a driving sleeve is provided between the two sliding sleeves on the same sliding door, and a buffer spring is provided between the driving sleeve and the sliding sleeves on both sides of the driving sleeve; when the driving sleeve applies driving force to the sliding door through the buffer spring, the buffer spring can drive the sliding door to move in an incompletely compressed state; the driving sleeves above the two sliding doors are respectively fixedly connected to the two straight sections via traction arms; two telescopic containers filled with gas and distributed at intervals are provided in the top box; the adjacent ends of the two telescopic containers are respectively fixedly connected to the two traction arms, and the two telescopic containers are fixedly connected to the two traction arms. The ends of the two telescopic containers are fixedly connected to the top box respectively; vertical airbags are fixed to the rear sides of the ends close to the two sliding doors, and a transverse airbag is fixed to the rear side of the top box, and the transverse airbags are connected to the two telescopic containers through air hoses; the two vertical airbags are connected to the two telescopic containers through air hoses respectively; when opened, the transverse airbags and the vertical airbags are not fully extended during the movement of the two sliding doors. When the sliding doors stop moving, the transverse airbags and the vertical airbags continue to extend to make sealing contact with the train; when the two sliding doors are closed, the transverse airbags and the vertical airbags are first contracted to separate from the train, and then the two sliding doors slide toward the middle.

2. The full-height platform safety door according to claim 1, characterized in that: The synchronous belt is made of rubber or polyurethane and has a steel wire rope embedded therein. The synchronous belt and the pulley are provided with a matching tooth structure.

3. The full-height platform safety door according to claim 1, characterized in that: There are two driving motors, which are respectively connected to the two pulleys for transmission.

4. The full-height platform safety door according to claim 1, characterized in that: A supporting seat is fixed above each of the two fixed doors. Both ends of the guide rod are rotatably connected to the two supporting seats. The two pulleys are rotatably connected to the two supporting seats.

5. The full-height platform safety door according to claim 1, characterized in that: A ground rail is provided on the lower side of the sliding door to provide support therefor, and limiting steps are provided on the two fixed doors to limit the travel of the sliding door.

6. The full-height platform safety door according to claim 1, characterized in that: Two guide cylinders are fixed above the two fixed doors, and the opposite ends of the two guide cylinders are open ends. The two telescopic containers are respectively located in the two guide cylinders. The sides of the guide cylinders are provided with slots for the traction arms to move.

7. The full-height platform safety door according to claim 1, characterized in that: The main body of the telescopic container is a bellows made of elastic material, and both ends of the bellows are sealed by sealing plugs.

8. The full-height platform safety door according to claim 1, characterized in that: The transverse airbag and the vertical airbag are made of elastic material, are hollow inside, and have surrounding side walls with an annular corrugated structure.

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